slice cookie dough

New to baking i have a question, when you have cookie dough in a log shape you can slice the dough or spoon the dough out. But read if you slice the dough instead of spooning the dough you will have crispier cookies,how is this so? Sorry if this is a stupid question to any of the experience bakers.

I'm guessing it has something to do with the amount of surface cookie that's baking. When you spoon the dough, you have a little "mountain" of dough that needs to heat thru and spreads as it bakes. When you cut the dough, you've got more cookie surface cooking and you've controlled the thickness for a more-even bake. More moisture is "trapped" in the mountain shaped dough producing a chewier cookie.